English:
After buying Oniken, you can download it and knock yourself out playing. But before submitting your high-score to our leaderboard, there are a few steps you must take.First, click with the right button in your game, and select (view cd-key). Then should enter on Oniken's Desura page while logged in. Look for the tabs below our banner. There should be SUMMARY, NEWS, REVIEWS, VIDEOS, IMAGES, FORUM and CONNECT.
(or just go here: Indiedb.com).

Click on the connect tab and then click on the connect button. Finally, use this serial key on the Leaderboards button at Oniken's launcher and there you go!